12 March 1970
(The Chadron Record, Chadron, Nebraska)
Source: NewspaperArchive.com, U.S.A.
Quote from the article:
“Mr. and Mrs. Dale Nowka, who live 5 miles north of Culbertson, and Safety Patrol Trooper Dale Rowedder, McCook, know that they saw something early Saturday, Feb. 28 .”
Satellite photo of Culbertson, Nebraska (tageo.com)